for (i = 0; i < n_sockets; i++) {
struct epoll_event ev;
Fifo *f;
+ int fd;
+
+ fd = SD_LISTEN_FDS_START+i;
+
+ if ((r = sd_is_fifo(fd, NULL)) < 0) {
+ log_error("Failed to determine file descriptor type: %s", strerror(-r));
+ goto fail;
+ }
+
+ if (!r) {
+ log_error("Wrong file descriptor type.");
+ r = -EINVAL;
+ goto fail;
+ }
if (!(f = new0(Fifo, 1))) {
r = -ENOMEM;
zero(ev);
ev.events = EPOLLIN;
ev.data.ptr = f;
- if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, SD_LISTEN_FDS_START+i, &ev) < 0) {
+ if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) {
r = -errno;
fifo_free(f);
log_error("Failed to add fifo fd to epoll object: %s", strerror(errno));